Hi,

I am not sure this can be done, but here is what I would have to do.

   * Customer currently has one library(libA) with one device class
     (devA) defined that points at libA, and several storage pools that
     use devA.
   * Customer has installed new library (libB) which is identical to libA.
   * I would like to change the device class of the copypool to be devB
     so it uses libB and not libA anymore.
   * The upd stg command does not support updating the device class
     attribute.  I can see why it might not, so it keeps people from
     moving an LTO based storage pool to  say a DLT library.

My solution is:

   * rename copypool to oldcopypool
   * create new copypool using new devB class
   * make sure that all new backup data is to diskpool which I backup
     to copypool prior to migration or any data going straight to
     tapepool must goto copypool at the same time via the "copy storage
     pools" attribute.
   * Then start the lengthy backup of tapepool to copypool.  This means
     every byte in tapepool has to be re-copied to the new copypool.
     In my case this will take about 14 days of non-stop spinning of
     tapes on every drive available!  So for all practical purposes it
     will take me 3-4 weeks since I will have to use the drives for
     production purposes during that time.
   * Once tapepool is backed up to copypool I can start the long
     process of deleting oldcopypool.  I will have to do a del vol
     VOL_NAME discarddata=yes for each volume in the oldcopypool.  This
     will be very IO intensive and will take some time as you can only
     run a couple of these at a time without seriously impact the
     performance of the system.

My question:

Does anybody have a better way to do this?  I am missing something in my
process above that might make things simpler?  This is definitely a time
when I wish I could just poke something into the TSM DB!

Thank You in advance for any help you can offer.

--
Regards,
Mark D. Rodriguez
President MDR Consulting, Inc.

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